You can ask for the ICD 10 codes (Used to be ICD9s back when I billed for physicians.

Ask for the codes that will be used for your procedure. Ask the price for that code for your insurance (medicare, blue shield/cross... they should ALL be the same. Billing a procedure different priced to different insurances is FRAUD, even if it's a personal injury or whatever. Same procedure, same price!!!).

Your insurance company has what they call an ALLOWABLE amount for each procedure. Between what they consider allowable and the difference of what they billed you, if they are participating providers with your insurance company (also depending on copays and such) you should only be billed a portion of what that allowable amount was. The doctor is not allowed to receive more than what is the allowed amount by medicare, blue shield and whatever insurance you're using (they all have different allowable amounts).

Anesthesia is measured in increments of 15 minutes. Every fifteen minutes is going to be another so many $$. There is also a base cost for your procedure, again another procedure code from the anesthesia office. Again, you go through what amount the doctor/nurse anesthestist is allowed to collect from that procedure, and that's what they are allowed to collect.

Normally if your doctor is participating, he MUST write off the balance of whatever your insurance didn't consider allowable. This is why you should always go to a doctor that participates with your insurance.

If you have a deductible to meet, that will be taken in to account and will be deducted from what they are paid, because they will be expecting the customer to make up the balance of the "allowable amount" of that procedure code's worth.

Not sure that you can get all that info from them, but you can sure and try to get it all. Say you want ICD 10's or whatever number they are up to at this point (procedure codes for the operations and office visits or whatever you are going in for). You should then be able to call the insurance company, give them the procedure code, and if there are no unforseen issues and problems, they can give you an allowable amount/ratio, and maybe tell you what you're portion will be if you need to pay any of it.